I think this is link referenced (link purposely broken to avoid ECF rules infraction, please adjust to see article):
https://www .endocrine.org/news-room/2018/e-cigarettes-may-lead-to-accumulation-of-fat-in-the-liver
The interesting thing about this article (which I'm not convinced is at all accurate) is that they are placing the results of high fatty liver results on nicotine and not any other component of vaping. I would think they might focus on VG and the sugars present rather than nicotine.
The 2 other things that make me dubious of the results is that the researchers only used mice missing a gene that makes them more prone to fatty liver disease AND they fed the mice a diet of high fat and cholesterol before starting the testing with ecig vapor (amount of vapor not specified). Also, there was no mention in the article of how the control group of mice fared with the aerosol saline solution, although the unsaid inference is that they were fine, even though they were fed the same high fat/high cholesterol diet. It would be interesting to see how a control group of healthy mice without missing genes would have been affected.
The second thing I question is the amount of vapor from ecigs used. They had a high enough concentration of ecig vapor to reach the same level of nicotine concentration in the blood as a typical smoker. I would think it would be an excessive amount of vapor to reach those levels since , at least in my own experience, it takes much more vaping to reach those levels. This is unrealistic in my opinion.
The above being said, I am not a medical researcher, just a guy with a mod in hand. But this seems skewed and rather questionable. Perhaps those with a better background in medical research, and more complete analysis of the finding, including the control group of mice could shed more light on this.
My takeaway is that if a human was missing this important gene, any lifestyle change would be something to consider carefully, but it doesn't mean that this result could be construed to be a problem for all.